Sewer-pipe.



I A. 1. 50m.

SEWER PIPE.

APPLICATION men FEBJI. 1914.

1,3. 5&43 5, Patented Oct" 26, 191.5.

3& 2. I 3 i y/M 4 Lg I Mme labia zx g ,fiw-zib I ALBERT .r. BOYLE, orBALTIMORE, MARYLAND.

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Specification of Letters Patent.

Patented Oct.26,19 15 Application filed February 7, 1914. -Seria1No.817,091.

1/ 0 all ll'7iomit in ag concern:

Be it known that l. Amuurr J. BOYLE, a citizen of the l mited States,residing at Baltiinore, in the State or lllarvland, have inventedcertain new and useful improvements in Sewer-Pipes, of which thefollowing is a specification.

This inventioii relates to improvements in reinforced concrete sewerpipes for use in constructing sewers or other conduits, and has for itsobject to provide a pipe, or section. with a hell end and a spigot end,the latter being adapted to fit within the former, and each having agroove therein which coincides with each other when the pipes, orsections. are fitted together, and each oi said ends having loopsprojecting into said groove, whereby when the pipes, or sections, areassembled the joints may he filled with concrete, or cement, without theuse of hands or h'lll'lilfll' devices to prevent the filling materialfrom running out of said joints, thus forming a locked reinforced sealedjoint between each pipe or section.

The invention consists of the novel construction and arrangement of theparts and coinhination of parts hereinafter more fully set forth in thefollowing specification and pointed outin detail in the appended claim.

In the accompanying drawings,-Figure 1 is a" vertical section of thehell and spigot ends of a pipe assembled with the concrete filling inthe joint. Fig. 2 is a top plan view of the hell end showing'the holethroughwhich the concrete is poured when the pipes or sections are inposition. Fig. 3 is an end view of Fig 2. v

- Referring to the accompanying drawing, iorming part of thisspecification, and in which like reference numerals designate like partsthroughout the several views thereof,

1 designates a pipcor section, having a bell.-

end-2 and a spigot end The pipe 1 is provided with corrugatedreinforcing rods i -extending longitudinally thereof and projecting outto near the spigot end 3 to re nforce the same and their other ends proecting down on an incline into the bell end, then running longiiudinallyof said end and have their extremities bent inwardly at'riglit angles,and the corrugated reinforcing rods 5 extending around the said rods 4:.The spigot end 3 is provided Willh a beveled surface 5 at theendtherein" and a shoulder 7 jusi; hack of said beveled surface, and anannular groove 8 on its outer surrece'just hack ofthe said shoulder 7.This groove 8y i I is provided with metal loops 9 projecting therein andarranged at a suitable distance apart, and which are even with or belowthe surface of the pipe. The bell end 2 of the pipe is provided witha'shoulder 10 against which the spigot end impinges, and a beveledsurface 11 and a shoulder 12 against which the beveled surface (landshoulder 7, respectively, impinge. The bell end 2 is also provided withan annular groove 13 on its inner surface which coincidesv with thegroove 8 ofthe spigot end when the pipes, are assembled, as shown inFig.1, and has an elongated slot or hole 14 at the top thereof leadingin to the groove 13. This groove 13 is also provided with metal loops 15projecting therein and arranged at a suitable distance apart; and all ofwhich are even with or below the outer surface of said groove. The endsof the metal forming the loops 9 and 15am embedded in thebody ofthepipe. The loops 9 and 15 being below the outer surfaces'of the grooves 8and 13 they will not strike or interfere in any manner whenthe spigotend is being pushed into the bell end of the pipe or section. When thepipes, or sections, are assembled the ceinent, or concrete, filling ispoured into the hole 14. and flows around the grooves 8 and loops 9and15, whereby a reinforced locked and sealed joint is formed betweenthe saidr it will be seen from the foregoing that the pipes or sections.

spigot end fits so close within the bell end that the concrete, orcement, filling cambe poured into the joints without the use of hands,or similar devices being used to hold the filling into the joints untilit sets.

.13 filling the latter and surrounding the" Having thus described'niyinvention, What I claim is:

A pipe having a bell end provided with" an annular groove in its innersurface and a hole leading into said groove from the outersurface, aspigot end provided with an annular groove in its outerv surface anglesbeyond the annular greove of the bell end, a number of metal loopsformed of separate Wires each having its ends pro ecting through thereinforcing material, said loops being entirely Within the annulargroove of the bell end, and a number of metal loops formed of separateWires each having its ends projecting through the reinforcing material,said last-mentioned loops being entirel'y Within the annular groove ofthe spigot; end, whereby when the spigot end of Witnesses 'CHAPIN A.FERGUSON,

EMMA BELL.

